Article
Chemistry, Multidisciplinary
Jiangting Zhao, Zhuo Xiong, Junyi Wang, Yaqin Qiu, Yongchun Zhao, Pengfei Liu, Junying Zhang
Summary: In this study, a 1D/2D ZnO nanofiber/graphdiyne oxide heterojunction was designed as a photocatalyst for CO2 reduction. The difference between graphdiyne and graphdiyne oxide as co-catalysts was investigated. It was found that graphdiyne oxide had better abilities in adsorbing CO2 and enhancing light absorption compared to graphdiyne, resulting in higher CO yield in the photocatalytic reduction of CO2.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Review
Materials Science, Multidisciplinary
Ping Niu, Junjing Dai, Xiaojuan Zhi, Zhonghui Xia, Shulan Wang, Li Li
Summary: Graphitic carbon nitride (GCN) has shown great potential as a photocatalyst for overall water splitting, with breakthrough progress being made in this dynamic research field. Modulating the activity of GCN can lead to more efficient photocatalytic water splitting, offering new ideas and methods for the design of advanced photocatalysts in the future.
Review
Chemistry, Multidisciplinary
Yinghui Wang, Lizhen Liu, Tianyi Ma, Yihe Zhang, Hongwei Huang
Summary: This review provides a detailed introduction to the physicochemical properties of 2D g-C3N4 nanosheets, their synthetic strategies, and various applications in energy conversion and storage, highlighting their superior performance and design potential.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Materials Science, Multidisciplinary
Xinyue Kong, Xiangmei Liu, Yufeng Zheng, Paul K. Chu, Yu Zhang, Shuilin Wu
Summary: This review summarizes the basic characteristics, preparation methods, and photocatalytic antibacterial mechanism of metal-free polymeric two-dimensional nanomaterial graphitic carbon nitride (g-C3N4), emphasizing the importance of increasing light utilization, reducing recombination of electron-hole pairs, and maintaining biocompatibility and environmental friendliness. Furthermore, various modification strategies and examples of combining g-C3N4's photocatalytic antibacterial effect with other strategies to achieve synergistic effects are introduced.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Article
Engineering, Environmental
Hao Liu, Shihai Cao, Liang Chen, Kun Zhao, Chunbo Wang, Mengxin Li, Shigang Shen, Wenjing Wang, Lei Ge
Summary: Harvesting value-added products by CO2 reduction through photocatalysis is a sustainable approach. A novel 2D/2D van der Waals heterojunction was constructed using few-layer iodinene (FLI2) and carbon nitride nanosheets (CNNS) for CO2 reduction under visible light irradiation. This heterojunction achieved a significantly enhanced CO production rate compared to pristine CNNS, attributed to the maintained crystal structure and polymeric framework of CNNS. The FLI2/CNNS interface facilitated electron transfer, resulting in increased charge separation and decreased charge recombination. This work highlights the potential of metal-free heterojunction for efficient photocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Hanane Boumeriame, Alexey Cherevan, Dominik Eder, Dogukan H. Apaydin, Tarik Chafik, Eliana S. Da Silva, Joaquim L. Faria
Summary: In this study, CuAl layered double hydroxide (LDH) and polymeric carbon nitride (g-C3N4, GCNN) were assembled into novel 2D/2D CuAl-LDH/GCNN heterostructures for visible-light-driven water splitting. The heterostructures exhibited significantly enhanced H-2 evolution, with the optimal LDH loading of 0.2CuAl-LDH/GCNN showing a 32-fold increase compared to GCNN. Additionally, 0.2CuAl-LDH/GCNN generated 1.5 times more O-2 than GCNN. The improved photocatalytic performance was attributed to efficient charge separation at the heterojunction interface, enhanced utilization of longer-wavelength photons, and higher surface area for catalytic reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Ying Zhu, Liang He, Yiqiang Ni, Genzhuang Li, Dongshuai Li, Wang Lin, Qiliang Wang, Liuan Li, Haibin Yang
Summary: Graphitic carbon nitride (g-CN) is a promising visible-light-responsive semiconductor material that is considered a fascinating photocatalyst and heterogeneous catalyst due to its non-toxicity, high thermal durability and chemical durability, and earth-abundant nature. However, the practical applications of g-CN in photoelectrochemical and photoelectronic devices are still in the early stages of development due to challenges in fabricating high-quality g-CN layers, wide band gaps, high charge-recombination rates, and low electronic conductivity.
Article
Engineering, Environmental
K. Harikrishnan, Gajendar Singh, Amisha Kushwaha, Varun Pratap Singh, Umesh Kumar Gaur, Manu Sharma
Summary: The presence of organic pollutants in the environment poses significant health risks, therefore, monitoring and controlling their levels is imperative. In this study, g-C3N4/BN nanocomposites were synthesized and used as a basis for an electrochemical sensor for detecting hazardous hydroquinone. The sensor demonstrated good sensitivity and practicality.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Jianfei Du, Yongli Shen, Fan Yang, Jiali Wei, Kehan Xu, Xuning Li, Changhua An
Summary: This study presents an in-situ topology strategy to synthesize defective MoN nanosheets with abundant active sites for efficient H2 evolution reaction (HER). The MoN nanosheets/g-C3N4 2D/2D heterojunction formed via this strategy improves the electron transfer rate and inhibits the recombination of photogenerated carriers, leading to a 120-fold increase in H2 production rate compared to bare g-C3N4.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Judith Zander, Jana Timm, Morten Weiss, Roland Marschall
Summary: The article discusses the generation of ammonia using defective polyheptazine and pyrite under light irradiation, presenting a promising decentralized approach as a sustainable alternative to the Haber-Bosch process.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Chao Yang, Yajie Wang, Jiaguo Yu, Shaowen Cao
Summary: Loading appropriate cocatalysts is an effective way to enhance photocatalytic activity. In this study, an ultrathin 2D/2D GDY/Bi2WO6 heterojunction was successfully crafted, showing enhanced photoreduction CO2 activity under simulated sunlight irradiation. The optimal sample BiGDY-3 exhibited a 4.9 times higher total CO2 conversion compared to Bi2WO6, attributed to enhanced light absorption, conductivity, and a large interfacial contact area, as well as increased specific surface area and micropores for enhanced CO2 adsorption.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Physical
Bicheng Zhu, Bei Cheng, Jiajie Fan, Wingkei Ho, Jiaguo Yu
Summary: Using semiconductor photocatalysis to convert solar energy into chemical energy is a viable strategy for addressing the energy and environmental crisis. Graphitic carbon nitride (g-C3N4) is a popular 2D photocatalyst with visible light response, low cost, and high stability, but single g-C3N4 photocatalyst has poor performance due to fast recombination of photogenerated electrons and holes. Hybridizing g-C3N4 with other 2D materials to construct 2D/2D heterojunction photocatalysts improves this limitation by offering large contact area and plentiful channels for the migration and separation of photogenerated charge carriers, inheriting the strengths of 2D structure such as high specific surface area and abundant active sites.
Article
Chemistry, Physical
Keng Chen, Huazhang Guo, Jiye Zhang, Liang Wang, Minghong Wu
Summary: This work focuses on the development of a highly efficient photocatalyst for clean hydrogen production. The metal-free 2D/2D boron/g-C3N4 nanosheet heterojunction (B-CN) was designed and synthesized, which showed a hydrogen generation rate 35 times higher than g-C3N4. The tight heterojunction architecture allows for enhanced light absorption, increased carrier concentration, and efficient charge transfer, leading to improved photocatalytic activity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Chemical
Wei Deng, Xuqiang Hao, Yifan Shao, Siyu Guo, Zhiliang Jin
Summary: In this work, a two-dimensional heterojunction was constructed by coupling graphdiyne with highly crystalline nitrogen defect g-C3N4 nanosheets. This heterojunction showed enhanced photocatalytic activity and efficient overall water splitting. The promising application value of this hybrid structure was demonstrated through hydrogen and oxygen production.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Damian C. Onwudiwe, Violet M. Nkwe, Olalekan C. Olatunde, Hela Ferjani
Summary: The combination of carbon-based materials with semiconductor nanoparticles of different structures promotes unique properties. The photocatalytic activity of g-C3N4/Cu-Bi2S3 heterostructure was investigated in this study, showing about 95% degradation efficiency for methyl orange.
CERAMICS INTERNATIONAL
(2023)
